|
DE901560C
|
|
Electric luminous candle or incandescent lamp
|
|
GB482634A
|
|
A system of protection for liquid-insulated electrical apparatus
|
|
GB461008A
|
|
Indicating device for liquid-filled electrical apparatus
|
|
GB459528A
|
|
Indicating device for liquid-filled electrical apparatus
|
|
GB367125A
|
|
Improvements in electrical resistance elements for use in the measurement of radiant energy
|
|
GB355196A
|
|
Improvements in bolometric apparatus
|
|
GB293705A
|
|
A device for protecting transformers, switches, motors, generators, and similar electrical machines and apparatus
|
|
US1936707A
|
|
Method of protecting electrical apparatus
|
|
GB293034A
|
|
Method and apparatus for protecting transformers, switches, motors, generators, and other electrical apparatus
|
|
GB307570A
|
|
Process for preventing explosive gas mixtures from being formed in the casings of electrical apparatus enclosed in an insulating medium
|
|
GB282370A
|
|
Method of protecting transformers, switches, motors, generators and similar electrical apparatus
|
|
US1774961A
|
|
Optical protection of electrical apparatus
|
|
US1796746A
|
|
Protection of electrical apparatus
|
|
US1717366A
|
|
Protection of electric apparatus
|
|
GB273701A
|
|
Improvements relating to protective devices for electrical apparatus
|
|
GB241230A
|
|
Apparatus for the rapid quenching of sparking between electrical conductors, produced by excessive voltage
|
|
US1585014A
|
|
Protection of liquid-insulated apparatus
|
|
US1642402A
|
|
Protection of electric apparatus
|
|
US1642406A
|
|
System of protection of electric apparatus
|
|
US1642403A
|
|
Protection of liquid-insulated electric apparatus
|
